Ilford Delta 100 Professional is a medium-speed, ISO 100 black-and-white negative film designed for photographers who demand maximum resolution, fine detail, and exceptional image clarity. Using Ilford’s modern Core-Shell crystal technology, it offers virtually imperceptible grain and ultra-sharp edge definition, making it ideal for large-format prints and high-resolution digitizations. Engineered for versatility under bright, controlled lighting conditions, Delta 100 excels across landscape, architectural, portrait, and commercial fine-art photography. It features a nominal sensitivity of ISO 100/21° and processes seamlessly in standard B&W chemistry, yielding reliable tonal control and excellent push/pull flexibility ranging from ISO 50 to 200.
Ilford Delta 100 Pro
Development times
Open in the calculator ›| Developer | Dilution | EI | Temp | Time | Agitation | Source |
|---|---|---|---|---|---|---|
| ID-11 | 1+1 | 100 | 20.0 °C | 11:00 | — | |
| ID-11 | 1+3 | 100 | 20.0 °C | 20:00 | — | |
| ID-11 | stock | 100 | 20.0 °C | 8:30 | — | |
| ID-11 | 1+1 | 100 | 20.0 °C | 11:00 | Ilford — 4 inversions every 60 s | |
| ID-11 | 1+3 | 100 | 20.0 °C | 20:00 | Ilford — 4 inversions every 60 s | |
| ID-11 | stock | 100 | 20.0 °C | 8:30 | Ilford — 4 inversions every 60 s |
Development times by developer
24 developers
- Ilford Delta 100 Pro in 510 Pyro 3
- Ilford Delta 100 Pro in Acufine 1
- Ilford Delta 100 Pro in D-76 15
- Ilford Delta 100 Pro in FX-39 Type II 1
- Ilford Delta 100 Pro in Fomadon Excel W27 2
- Ilford Delta 100 Pro in Fomadon P 2
- Ilford Delta 100 Pro in Fomadon R09 1
- Ilford Delta 100 Pro in HC-110 3
- Ilford Delta 100 Pro in ID-11 15
- Ilford Delta 100 Pro in Ilfosol 3 6
- Ilford Delta 100 Pro in Ilfotec DD 3
- Ilford Delta 100 Pro in Ilfotec DD-X 5
- Ilford Delta 100 Pro in Ilfotec HC 3
- Ilford Delta 100 Pro in Ilfotec LC29 6
- Ilford Delta 100 Pro in Ilfotec RT Rapid 5
- Ilford Delta 100 Pro in Microphen 6
- Ilford Delta 100 Pro in Perceptol 6
- Ilford Delta 100 Pro in Pyrocat-HD 3
- Ilford Delta 100 Pro in Rodinal 4
- Ilford Delta 100 Pro in T-Max Developer 3
- Ilford Delta 100 Pro in T-Max RS 3
- Ilford Delta 100 Pro in Ultrafin 4
- Ilford Delta 100 Pro in Ultrafin Plus 2
- Ilford Delta 100 Pro in XTOL 5
Character
Unlike classic, cubic-grain emulsions like FP4 Plus, Delta 100 delivers a crisp, modern visual aesthetic. Its look is defined by smooth, realistic tonal transitions, deep clean blacks, and vivid highlights without harsh clipping.
Grain Structure: Exceptionally fine, tight, and uniform. Images retain remarkable clarity even when significantly enlarged.
Sharpness & Resolving Power: Very high edge contrast (acutance), capturing microscopic details in textures, foliage, and architectural lines.
Contrast & Latitude: Medium, balanced contrast with a smooth linear response. It records wide dynamic ranges smoothly, provided exposure is precise.
Aesthetic Signature: Clean, precise, and contemporary—less "vintage film grit" and more neutral, lifelike precision.
Link to this page
Specification
- BaseFilm base The clear, flexible support that carries the emulsion. Read more in the glossary ›
- Acetate
- EmulsionEmulsion The light-sensitive layer of a film: tiny crystals of silver halide held in gelatin. Read more in the glossary ›
- Tabular
- Spectral sensitivitySpectral sensitivity Which colours of light a film responds to, and how strongly. Read more in the glossary ›
-
Panchromatic — what this means
Sensitive to the whole visible spectrum, so colours turn into greys roughly the way the eye weighs them. This is what almost every general-purpose black and white film is. It has to be loaded and developed in complete darkness — no safelight is safe for it.
- Grain (RMS)Grain The visible, sand-like texture in a photograph that comes from the clumps of silver or dye that form the image. Read more in the glossary ›
- —
- Resolving power line pairs / mm
- —
- Maximum densityDensity How much light a negative, transparency or print blocks. Read more in the glossary ›
- —
- Latitude overExposure latitude How far a film can be over- or underexposed and still give a usable result. Read more in the glossary ›
- +1.0 stops
- Latitude under
- −1.0 stops
- First released
- 1992
A dash means the figure has not been read off a datasheet. Nothing here is estimated.
Long exposures
Reciprocity
| Metered | Expose |
|---|---|
| 1 s | 1 s |
| 2 s | 2.4 s |
| 5 s | 7.6 s |
| 10 s | 18 s |
| 30 s | 1 min 13 s |
| 1 min 00 s | 2 min 54 s |
| 2 min 00 s | 6 min 57 s |
| 5 min 00 s | 22 min 02 s |
Tc = Tm^P for metered times over 1 s; 1 s or less needs no correction (P = 1.26)
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